@Article{Goltsman_etal2001,
author="Gol{\textquoteright}tsman, G. N.
and Okunev, O.
and Chulkova, G.
and Lipatov, A.
and Semenov, A.
and Smirnov, K.
and Voronov, B.
and Dzardanov, A.
and Williams, C.
and Sobolewski, R.",
title="Picosecond superconducting single-photon optical detector",
journal="Appl. Phys. Lett.",
year="2001",
volume="79",
number="6",
pages="705--707",
optkeywords="NbN SSPD; SNSPD",
abstract="We experimentally demonstrate a supercurrent-assisted, hotspot-formation mechanism for ultrafast detection and counting of visible and infrared photons. A photon-induced hotspot leads to a temporary formation of a resistive barrier across the superconducting sensor strip and results in an easily measurable voltage pulse. Subsequent hotspot healing in \~{}30 ps time frame, restores the superconductivity (zero-voltage state), and the detector is ready to register another photon. Our device consists of an ultrathin, very narrow NbN strip, maintained at 4.2 K and current-biased close to the critical current. It exhibits an experimentally measured quantum efficiency of \~{}20{\%} for 0.81 $\mu$m wavelength photons and negligible dark counts.",
optnote="exported from refbase (https://db.rplab.ru/refbase/show.php?record=1543), last updated on Mon, 24 May 2021 13:30:03 -0500",
issn="0003-6951",
doi="10.1063/1.1388868",
opturl="http://aip.scitation.org/doi/10.1063/1.1388868",
opturl="https://doi.org/10.1063/1.1388868"
}